One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,6)(5,7)(17,18,22,27)(19,26,23,24)(20,29,31,28)(21,25,32,30)(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(17,19,22,23)(18,24,27,26)(20,30,31,25)(21,29,32,28)(10,13)(14,16)(17,20,19,25,22,31,23,30)(18,21,24,28,27,32,26,29)(1,4,5,3)(2,6,7,8)(9,11)(10,14)(12,15)(13,16)(17,21,22,32)(18,25,27,30)(19,28,23,29)(20,24,31,26)(11,15)(14,16)(17,19,22,23)(18,26,27,24)(20,25,31,30)(21,29,32,28)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.